#include <iostream>

using namespace std;

const int ArSize = 8;

int sum_arr(int arr[], int n);

int main()
{
    int cookies[ArSize] = { 1, 2, 4, 8, 16, 32, 64, 128 };

    int sum = sum_arr(cookies, ArSize);
    cout << "Total cookies eaten: " << sum << "\n";

    return 0;
}

int sum_arr(int arr[], int n)
{
    int total = 0;
    for (int i = 0; i < n; i++)
    {
        total = total + arr[i];
    }
    return total;
}
